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dc.contributor.authorCrespo, B. G.-
dc.contributor.authorEspinoza-González, O.-
dc.contributor.authorTeixeira, I. G.-
dc.contributor.authorCastro, Carmen G.-
dc.contributor.authorFigueiras, F. G.-
dc.date.accessioned2012-01-16T13:03:00Z-
dc.date.available2012-01-16T13:03:00Z-
dc.date.issued2011-06-24-
dc.identifier.citationEstuarine Coastal and Shelf Science 94(2): 172–181 (2011)es_ES
dc.identifier.urihttp://hdl.handle.net/10261/44309-
dc.description.abstractMicrobial plankton biomass, primary production (PP) and phytoplankton growth rates (μ) were estimated along the NW Iberian margin during an upwelling relaxation event. Although the interaction between wind forcing and coastline singularities caused high spatial variability in PP (0.4–8.4 g C m−2 d−1), two domains (coastal and oceanic) could be distinguished regarding microbial plankton biomass and μ. At the coastal domain, with higher influence of upwelling, diatoms showed an important contribution (27 ± 17%) to total autotrophic biomass (AB). Nonetheless, AB was dominated by autotrophic nanoflagellates (ANF) at both realms, accounting for 62 ± 16% and 89 ± 6% of the integrated AB at the coastal and oceanic domain respectively. AB and heterotrophic biomass (HB) were significantly higher at the oceanic than at the coastal domain, with both biomasses covarying according to HB:AB = 0.33. Whereas the low phytoplankton carbon to chlorophyll a ratio (Cph:chl a = 38 ± 3) and the high μ = 0.54 ± 0.09 d−1 registered at the coastal stations suggest that phytoplankton was not nutrient limited at this domain, the values (Cph:chl a = 157 ± 8; μ = 0.17 ± 0.02 d−1) recorded at the oceanic domain point to severe nutrient limitation. However, the high Fv/Fm fluorescence ratios (0.56 ± 0.09) measured at the sea surface in the oceanic domain suggest that nutrient limitation did not occur. To reconcile these two apparently opposite views, it is suggested the occurrence of mixotrophic nutrition of ANF, with heterotrophic nutrition supplying about 75% of carbon requirements.es_ES
dc.description.sponsorshipThis work was funded by the EU project 24 MAST-CT90-0017 “The control of phytoplankton dominance” and by the Spanish 25 project CTM2007-66408-C02-01/MAR (Ministerio de Educación y Ciencia). B.G.C. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 19 was supported by a Xunta 1 de Galicia Ángeles Alvariño fellowship and O.E.G by a 2 Mideplan fellowship of Chile government.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsopenAccesses_ES
dc.subjectMicrobial plankton biomasses_ES
dc.subjectAutotrophic nanoflagellateses_ES
dc.subjectMixotrophyes_ES
dc.subjectCoastal upwellinges_ES
dc.subjectNW Iberiaes_ES
dc.titlePossible mixotrophy of pigmented nanoflagellates: microbial plankton biomass, primary production and phytoplankton growth in the NW Iberian upwelling in springes_ES
dc.typeartículoes_ES
dc.identifier.doi10.1016/j.ecss.2011.06.008-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.ecss.2011.06.008,es_ES
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